LTC3879IMSE#PBF

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The LTC3879IMSE#PBF is a highly integrated, synchronous multiphase DC/DC controller optimized for maximum flexibility and efficiency in the implementation of the latest high-current power supply topologies.

It is designed to operate with 2- to 8-phase switching regulators at frequencies of up to 1MHz, making it ideal for power supply designs requiring large numbers of phases, high efficiency and high current. The controller integrates comprehensive diagnostic and control circuitry, and includes features such as an output voltage sequencer, programmable current limit, active voltage positioning, and onboard gate drivers.

The LTC3879IMSE#PBF is part of the PMIC-Voltage Regulators-DC DC Switching Controllers family. This family of products provides the performance and flexibility required by todays power supply designers.

In order to achieve the highest efficiency, the controller also features proprietary synchronization circuitry, allowing the switching frequency of multiple independent voltage supply controllers to be accurately synchronized. In addition, the controller integrates a variety of features that simplify circuit design, minimize power losses and reduce external component counts.

The LTC3879IMSE#PBF has an integrated phase-locked loop (PLL). This enables the controller to precisely synchronize the switching frequency of multiple independent voltage regulators, improving muxing accuracy and reducing EMI. The PLL also reduces the need for external components and simplifies designs by simplifying the clocking circuit.

The controller also includes on-chip diagnostics, including thermal shut down and output voltage monitoring. This ensures that the circuit operates within safe margins and prevents any undesired operation.

The controller also includes a high-speed 10bit ADC, allowing closed loop regulation of output voltage and current. This allows improved transient response and higher power supply efficiency. The ADC also ensures accurate regulation and monitoring of the outputs.

In addition, the controller includes programmable current limit, active voltage positioning, and anti-saturation control. These features help to optimize the power supply performance, ensuring maximum efficiency and reliability.

The LTC3879IMSE#PBF is ideally suited for use in notebook, desktop and server power systems, as well as for a wide range of other power topologies, such as multi-phase buses, VRMs, and HDD backplanes.

Overall, the LTC3879IMSE#PBF is a highly integrated, cost-effective DC/DC switching controller for high-current power supply designs. With its wide range of features, it is well-suited for the most demanding power supply applications.

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